Type-writer attachment.



T. A. McMURRAY I TYPE WRITER ATTACHMENT.

APPLICATION FILED AUG-3h 1911.

1,261,576. Patented Apr. 2,1918.

2 SHEETS-SHEET lum/who:

Wit 14003 T. A. MCMURRAY; TYPE WRITER ATTACHMENT. APPLICATION FILED AUG-3|, 191]. 1,2 1,57 Patented Apr. 2,1918.

2 SHEETS-SHEET 2- THOMAS A. lvieivrnnnaY, or Earn, OKLAHOMA.

TYPE-WRITER ATTACHMENT.

Application filed August 31, 1917.

ToaZZ whom it may concern:

Be it known that I, THOMAS A. MoMUR- I RAY, a citizen of the United States, residing at, Enid, in the county of Garfield and State of Oklahoma, have invented new and useful Improvements in Type-WVriter Attachments, of which-the following is a specification.

This invention relates to typewriter attachments and it has particular reference to a device which may be readily applied to standard machines in general use for the purpose of enabling the carriage to be returned to its starting position upon the completion' of a line of writing without necessity for the operator using the hand for that purpose, the attachment being of such a mun-ether it'will also serve to partially rotate the platen thereby advancing the paper the space of one line.

A further object of the invention is to produce a simple, inexpensive and improved attachment whereby the operation of returning the carriage and partially rotating the platen may be performed by a sidewise pushing movement of the knee of the operator.

Vith these and other ends in view which will readily appear as the nature of the invention is better understood, the same consistsin the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

In" the accompanying drawings has been illustrated'a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the claims may be resorted to when desired,

Inthe drawings,

Figure 1 is aperspective view of thelever which forms a principal part of the'im proved attachment.

Fig. 2 is a perspective view of the supporting member for the lever. I Fig. 3 is a perspective view of a swivel member and connecting rod carried by the lever.

Fig. 4 is a side elevation showing a modi fied form of the connecting rod which is used in connection with certain machines.

Fig. 5 is a diagrammatic view of one form of a standard typewriter to which the invention has been applied.

Specification of Letters Patent.

Patented Apr. 2, 1918 Serial No. 189,166.

Fig. 6 is a diagrammatic view of another form of standard typewriter to whichthe invention' has been applied.

Corresponding parts in the several figures are denoted by like characters of reference.

15 designates a box or hearing member which is connected with one end of a clamp member which consists of a bar 16 having at its outer end an upstanding flange 17, said bar being also provided with a second upstanding flange 18 which is located intermediate the bearing member 15 and the flange 17, the flange 18 having a' thumb screw 19 threaded therethrough, thereby enabling the clamp to be mounted on the base portion of the frame A of a typewriter as indicated in Figs. 5 and 6, thereby supporting the bearing member 15 in spaced relationto the frame of the machine.

B designates a lever member comprising an intermediate portion 20that constitutes a rock shaft, said portion being supported for rotation in the bearing member 15 beyond which it extends terminally as shown, said intermediate portion being provided with collars 21 to prevent lengthwise movement thereof in the bearing member. The portion 20 is provided at its rearward end with an outwardly extending arm 22' having a rearwardly extending bracket 23 at its upper end, said arm and bracket being so roportioned as to extend to the proper height and rearward position with respect to the typewriter to which'it is to be applied. The forward end of the intermediate portion or rock shaft 20 has a downwardly extending arm 2 1 which is bent at 25 to produce a forwa-rdly extending portion 26 terminatin in a loop 27, the parts being-so arranged and proportioned that the loop 27 will be positioned adjacent to the knee of the operator. It may be stated that the lever member B is preferably" formed of a rod or wire of steel or other suitable material which is sufficiently stiff and rigid for the purposes intended. It may also be stated that the box or hearing member 15 is preferably formed in two pieces which may be connected together in the customary manner by lag screws so that it may be readily disconnccted and reassembled to enable the rock shaft portion of the lever member to be assembled therewith.

Mounted on the bracket 23 adjacent to the rear end thereof is a sleeve 28, said sleeve being mounted for rocking movement with 2% V p H 1,261,576

nal loop 37 equipped with a set screw 38 to enable the said loop to be securely mounted on the reverse lever on the carriage of the type- 1 writing machine, said lever being seen at 39 in Fig. 5 and at 4:0 in Fig. 6 of the drawings. Figs.

that Fig. 5 illustrates a conventional machine of the type in which the reverse lever is located at the left side of the carriage while in Fig. 6 a type of machine is shown in which the reverse lever .is' located at the right side of the carriage. In the latter type of machine the threaded rod, here designated by 33 must obviously be of much greater length than is necessary with the type of machine shown in Fig. 5. The rod 33 has been shown detached in Fig. 4:.

From the foregoing description taken in connection with the drawings hereto annexed, the operation and advantages of this invention will be readily understood. It will be seen that when the device is mounted in position for operation the operator, by an outward push of the knee against the loop 27 may tilt the lever member, thereby causing the reverse lever to be actuated by the threaded rod 33 or 33 as the case may be, the tilting movement of the lever B being sufficient to retract the carriage. The joint formed by the interengaging eyes at, 35 will give the necessary flexibility of movement. It will thus be seen that the operator is enabled to retract the carriage without using the hand for that purpose enabling both hands to be kept in constant proximity to. the keyboard and saving a considerable amount of time.

What is claimed is 1 1. A typewriter attachment comprising a clamp adapted to be mounted on the frame 5 and 6 differ in this respect,

or the machine, a bearing supported by said clamp, and a rocking lever member mounted in the bearing, said lever member including an upwardly extending arm having a rear- \vardly extending bracket and a downwardly extending arm having a terminal loop; and means for connecting the rearwardly extending bracket with the reverse lever of the typewriter, said means including flexibly connected rods one of which has a terminal loop provided with a thumb screw.

2, In a typewriter attachment, an actuating lever having an upwardly extending arm provided with a rearwardly extending bracket, collars on the rearwardly extending bracket, one of said collars being removably secured thereon, a sleeve rockingly supported on the bracket intermediate the collars and a connection between said sleeve and the reverse lever of a typewriter.

3. In a typewriter attachment, an actuating lever having an upwardly extending arm provided with a rearwardly extending bracket, collars on the rearwardly extending bracket, one of said collars being removably secured thereon, a sleeve rockingly supported on the bracket intermediate the collars and a connection between said sleeve and they reverse lever of a typewriter, said connection including flexibly connected rods, one of which has a terminal loop provided with a 7 secured thereon, a sleeve rockingly supported 1 on the bracket intermediate the collars and a connection between said sleeve and the reverse lever of a typewriter, said connection including flexibly connected rods, one of which has a terminal loop provided with a set screw, the other rod being adjustably connected with the sleeve, said sleeve having a downwardly extending neck with which the rod is threadedly engaged.

In testimony whereof I aiiix my signature.

THOMAS A. MCMURRAY.

Ccpies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

, Washington, D. 0.. 

